Development of SnO2-based gas sensor sensitive to dilute ethylene oxide in air

被引：14

作者：

Kugishima, M

Sakai, G

Shimanoe, K

Yamazoe, N

机构：

[1] Kyushu Univ, Fac Engn Sci, Dept Mat Sci, Kasuga, Fukuoka 8168580, Japan

[2] Kyushu Univ, Interdisciplinary Grad Sch Engn Sci, Dept Mol & Mat Sci, Kasuga, Fukuoka 8168580, Japan

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2005年 / 108卷 / 1-2期

关键词：

ethylene oxide; semiconductor gas sensor; tin dioxide; surface modification;

D O I：

10.1016/j.snb.2004.11.061

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In order to enhance sensitivity to C2H4O for the medical safety purpose, foreign additives (e.g. La2O3, SrO and CaO) were loaded on SnO2 powder. Among the additives tested, La2O3 proved itself to be a promising promoter for the sensitivity. On the other hand, the response and recovery rates were found to be deteriorated with La2O3. The rates were accelerated considerably when the La2O3-loaded SnO2 was further added with Pd or Pt. The device using Pt (0.5 wt.%)-La2O3 (0.5 wt.%)-SnO2 thus prepared showed sensor response exceeding 10 to 1 ppm C2H4O as well as fairly good response rates under dry condition at 300 degrees C, where response was defined as the resistance ratio (R-air/R-gas). (c) 2004 Elsevier B.V. All rights reserved.

引用

页码：130 / 133

页数：4

共 9 条

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